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Xu H, Pan J, Ma C, Mintah BK, Dabbour M, Huang L, Dai C, Ma H, He R. Stereo-hindrance effect and oxidation cross-linking induced by ultrasound-assisted sodium alginate-glycation inhibit lysinoalanine formation in silkworm pupa protein. Food Chem 2024; 463:141284. [PMID: 39298842 DOI: 10.1016/j.foodchem.2024.141284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 09/06/2024] [Accepted: 09/11/2024] [Indexed: 09/22/2024]
Abstract
Silkworm pupa protein isolate (SPPI) is rich in amino acids, making it chemically reactive, degradable, and easy to form lysinoalanine (LAL). We investigated how conformational cross-linking, induced by ultrasound-assisted sodium alginate, could inhibit the formation of LAL during the preparation of SPPI. Glycoconjugated SPPI (using 1 % sodium alginate under ultrasonication) showed the lowest LAL content i.e., 7.403 μg·mg-1, representing a 49.58 % decrease, with reference to the control. The ionic, hydrogen, and covalent bonds in the glycoconjugate increased by 171.79 %, 8.48 %, and 35.56 %, respectively. Glycation decreased arginine by 28.92 % and caused the oxidation of tyrosine, methionine and proline to form carbonyl groups. Some precursor amino acids, including lysine, serine, cysteine and threonine were not degraded during the combined treatment. The macromolecular aggregation caused by structural modifications strengthened the steric resistance of LAL cross-linking. The study outcomes provide a novel approach and theoretical basis for inhibition of LAL formation in SPPI.
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Affiliation(s)
- Haining Xu
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Jiayin Pan
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Chunfang Ma
- Shandong Yuwang Ecological Food Industry, Yucheng 251200, China
| | - Benjamin Kumah Mintah
- CSIR - Food Research Institute, P.O. Box M20, Accra, Ghana; Department of Agro-processing Technology and Food Bio-sciences, CSIR College of Science and Technology (CCST), Accra, Ghana
| | - Mokhtar Dabbour
- Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Qaluobia, Egypt
| | - Liurong Huang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Chunhua Dai
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China.
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Xu H, Pan J, Ma C, Dabbour M, Mintah BK, Huang L, Dai C, Ma H, He R. Effect of carbonyl-amino condensation, non-covalent cross-linking and conformational changes induced by ultrasound-assisted Maillard reaction on lysinoalanine formation in silkworm pupa protein. Int J Biol Macromol 2024; 263:130480. [PMID: 38423436 DOI: 10.1016/j.ijbiomac.2024.130480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/20/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
The inhibition of cross-linked lysinoalanine (LAL) formation in silkworm pupa protein isolates (SPPI) by Maillard reaction (using varying xylose concentration) and ultrasound treatment was studied. Results showed that sonicated SPPI was effectively grafted with high concentration of xylose (5 %), resulting in the lowest LAL content, which was 48.75 % and 30.64 % lower than the control and ultrasound-treated samples, respectively. Chemical bond analysis showed that the combined treatment destroyed the ionic bonds, intrachain (g-g-t), and interchain (g-g-g) disulfide bonds, but stimulated the polymerization of hydrogen and hydrophobic bonds between SPPI and xylose, and as well enhanced the net negative charge between SPPI/Xylose complexes. The particles of the complexes were more loose, dispersed and rough, and had a stronger hydrophilic microenvironment, accompanied by alterations in microscopic, secondary and tertiary structures. Ultrasound treatment induced the breakdown of the oxidative cross-linking in SPPI, and promoted the sulfhydryl group-dehydroalanine binding and the carbonyl-amino condensation of the protein and xylose, and thus inhibited the formation of cross-linked LAL. Furthermore, the physicochemical and structural parameters were highly interrelated with cross-linked LAL content (|r| > 0.9). The outcomes provided a novel avenue and theoretical basis for minimizing LAL formation in SPPI and improving the nutrition and safety of SPPI.
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Affiliation(s)
- Haining Xu
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Jiayin Pan
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Chunfang Ma
- Shandong Yuwang Ecological Food Industry, Yucheng 251200, China
| | - Mokhtar Dabbour
- Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Qaluobia, Egypt
| | | | - Liurong Huang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Chunhua Dai
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China.
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Xu H, Pan J, Hao J, Dabbour M, Mintah BK, Huang L, Dai C, Ma H, He R. Inhibition of cross-linked lysinoalanine formation in pH 12.5-shifted silkworm pupa protein, and functionality thereof: Effect of ultrasonication and glycation. Int J Biol Macromol 2024; 256:128120. [PMID: 37977474 DOI: 10.1016/j.ijbiomac.2023.128120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/11/2023] [Accepted: 11/14/2023] [Indexed: 11/19/2023]
Abstract
We added three different carbohydrates (Xylose/Xyl, Maltose/Mal, and Sodium alginate/Sal) to pH12.5-shifted silkworm pupa protein isolates (SPPI), and examined the influence of multi-frequency ultrasound (US) on them, with reference to lysinoalanine (LAL) formation, changes in conformational characteristics and functionality. Results showed that, the LAL content of the glycoconjugates - SPPI-Xyl, SPPI-Mal, and SPPI-Sal decreased by 1.47, 1.39, and 1.54 times, respectively, compared with the control. Notably, ultrasonication further reduced the LAL content by 45.85 % and brought SPPI-Xyl highest graft degree (57.14 %). SPPI-Xyl and SPPI-Mal were polymerized by different non-covalent bonds, and SPPI-Sal were polymerized through ionic, hydrogen, and disulfide (covalent/non-covalent) bonds. Significant increase in turbidity, Maillard reaction products and the formation of new hydroxyl groups was detected in grafted SPPI (p < 0.05). US and glycation altered the structure and surface topography of SPPI, in which sugars with high molecular weight were more likely to aggregate with SPPI into enormous nanoparticles with high steric hindrance. Compared to control, the solubility at pH 7.0, emulsifying capacity and stability, and foaming capacity of SPPI-US-Xyl were respectively increased by 244.33 %, 86.5 %, 414.67 %, and 31.58 %. Thus, combined US and xylose-glycation could be an effective approach for minimizing LAL content and optimizing functionality of SPPI.
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Affiliation(s)
- Haining Xu
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Jiayin Pan
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Jing Hao
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Mokhtar Dabbour
- Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Qaluobia, Egypt
| | | | - Liurong Huang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Chunhua Dai
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China.
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Zhang Z, Yang T, Wang Y, Liu J, Shi W, Hu H, Meng Y, Meng X, He R. Influence of Multi-Frequency Ultrasound Treatment on Conformational Characteristics of Beef Myofibrillar Proteins with Different Degrees of Doneness. Foods 2023; 12:2926. [PMID: 37569195 PMCID: PMC10417746 DOI: 10.3390/foods12152926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/17/2023] [Accepted: 07/19/2023] [Indexed: 08/13/2023] Open
Abstract
This study evaluated the effect of multi-frequency sonication (20 kHz, 25 kHz, 28 kHz, 40 kHz, 50 kHz) on structural characteristics of beef myofibrillar proteins (MPs) with different degrees of doneness (Rare 52~55 °C, Medium Rare 55~60 °C, Medium 60~65 °C, Medium Well 65~69 °C, Well Down 70~80 °C, and Overcooked 90 °C). The results showed that surface hydrophobicity and sulfhydryl content increased with the increase in degree of doneness. At the same degree of doneness, the sulfhydryl group contents reached the maximum at a frequency of 28 kHz. In addition, the absolute value of ζ-potential was significantly decreased after ultrasonic treatment (p < 0.05). SDS gel electrophoresis showed that the bands of beef MPs were not significantly affected by various ultrasonic frequencies, but the bands became thinner when the degree of doneness reached overcooked. Fourier transform infrared spectrum showed that with the increase of ultrasonic frequency, α-helix content decreased, and random coil content significantly increased (p < 0.05). The results of atomic force microscopy indicated that the surface structure of beef MPs was damaged, and the roughness decreased by sonication, while the roughness significantly increased when the degree of doneness changed from medium to overripe (p < 0.05). In conclusion, multi-ultrasound combined with degree of doneness treatment alters the structural characteristics of beef MPs.
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Affiliation(s)
- Zhaoli Zhang
- Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, College of Tourism and Culinary Science, Ministry of Culture and Tourism, Yangzhou University, Yangzhou 225127, China; (Z.Z.); (T.Y.); (J.L.); (W.S.); (H.H.); (Y.M.)
| | - Tingxuan Yang
- Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, College of Tourism and Culinary Science, Ministry of Culture and Tourism, Yangzhou University, Yangzhou 225127, China; (Z.Z.); (T.Y.); (J.L.); (W.S.); (H.H.); (Y.M.)
| | - Yang Wang
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China;
- Cuisine Science Key Laboratory of Sichuan Province, Sichuan Tourism University, Chengdu 610100, China
| | - Jiarui Liu
- Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, College of Tourism and Culinary Science, Ministry of Culture and Tourism, Yangzhou University, Yangzhou 225127, China; (Z.Z.); (T.Y.); (J.L.); (W.S.); (H.H.); (Y.M.)
| | - Wangbin Shi
- Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, College of Tourism and Culinary Science, Ministry of Culture and Tourism, Yangzhou University, Yangzhou 225127, China; (Z.Z.); (T.Y.); (J.L.); (W.S.); (H.H.); (Y.M.)
| | - Haochen Hu
- Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, College of Tourism and Culinary Science, Ministry of Culture and Tourism, Yangzhou University, Yangzhou 225127, China; (Z.Z.); (T.Y.); (J.L.); (W.S.); (H.H.); (Y.M.)
| | - Yang Meng
- Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, College of Tourism and Culinary Science, Ministry of Culture and Tourism, Yangzhou University, Yangzhou 225127, China; (Z.Z.); (T.Y.); (J.L.); (W.S.); (H.H.); (Y.M.)
| | - Xiangren Meng
- Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, College of Tourism and Culinary Science, Ministry of Culture and Tourism, Yangzhou University, Yangzhou 225127, China; (Z.Z.); (T.Y.); (J.L.); (W.S.); (H.H.); (Y.M.)
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China;
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Jiang L, Song J, Qi M, Suo W, Deng Y, Liu Y, Li L, Zhang D, Wang C, Li H. Modification mechanism of protein in rice adjuncts upon extrusion and its effects on nitrogen conversion during mashing. Food Chem 2023; 407:135150. [PMID: 36493491 DOI: 10.1016/j.foodchem.2022.135150] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 11/27/2022] [Accepted: 12/01/2022] [Indexed: 12/05/2022]
Abstract
The traditional production of wort with adjunct-introduced was achieved by double mashing procedure, which hindered the utilization of proteins in adjunct and led to a deficiency of nitrogen in wort. In this study, the modification mechanism of the extrusion pretreatment on the structure characterization of rice flour protein was investigated. The decoction mashing procedure was performed to enhance the nitrogen conversion of the extruded rice adjunct. Decreased solubility along with disrupted secondary and tertiary structures of rice protein were observed after extrusion. As a result, the total nitrogen, free amino nitrogen, and free amino acids content of wort with extruded rice adjunct-introduced were improved by 23.28 %, 34.67 %, and 7.33 %, respectively, which could be verified by the electrophoretic patterns of the wort protein. The application of extrusion as a pretreatment of adjuncts can promote the protein availability of adjuncts in the decoction mashing stage.
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Affiliation(s)
- Lijun Jiang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Jialin Song
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Mingming Qi
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Wenjing Suo
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Yuxin Deng
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Yao Liu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Luxia Li
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Dongliang Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Chenjie Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Hongjun Li
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China.
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Wang Y, Liu J, Zhang Z, Meng X, Yang T, Shi W, He R, Ma H. Insights into Ultrasonication Treatment on the Characteristics of Cereal Proteins: Functionality, Conformational and Physicochemical Characteristics. Foods 2023; 12:foods12050971. [PMID: 36900488 PMCID: PMC10000784 DOI: 10.3390/foods12050971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND It would be impossible to imagine a country where cereals and their byproducts were not at the peak of foodstuff systems as a source of food, fertilizer, or for fiber and fuel production. Moreover, the production of cereal proteins (CPs) has recently attracted the scientific community's interest due to the increasing demands for physical wellbeing and animal health. However, the nutritional and technological enhancements of CPs are needed to ameliorate their functional and structural properties. Ultrasonic technology is an emerging nonthermal method to change the functionality and conformational characteristics of CPs. Scope and approach: This article briefly discusses the effects of ultrasonication on the characteristics of CPs. The effects of ultrasonication on the solubility, emulsibility, foamability, surface-hydrophobicity, particle-size, conformational-structure, microstructural, enzymatic-hydrolysis, and digestive properties are summarized. CONCLUSIONS The results demonstrate that ultrasonication could be used to enhance the characteristics of CPs. Proper ultrasonic treatment could improve functionalities such as solubility, emulsibility, and foamability, and is a good method for altering protein structures (including surface hydrophobicity, sulfhydryl and disulfide bonds, particle size, secondary and tertiary structures, and microstructure). In addition, ultrasonic treatment could effectively promote the enzymolytic efficiency of CPs. Furthermore, the in vitro digestibility was enhanced after suitable sonication treatment. Therefore, ultrasonication technology is a useful method to modify cereal protein functionality and structure for the food industry.
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Affiliation(s)
- Yang Wang
- College of Tourism and Cooking & College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Jiarui Liu
- College of Tourism and Cooking & College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Zhaoli Zhang
- College of Tourism and Cooking & College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
- Correspondence: (Z.Z.); (R.H.); Tel.: +86-(511)-8878-0174 (R.H.)
| | - Xiangren Meng
- College of Tourism and Cooking & College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Tingxuan Yang
- College of Tourism and Cooking & College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Wangbin Shi
- College of Tourism and Cooking & College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
- Correspondence: (Z.Z.); (R.H.); Tel.: +86-(511)-8878-0174 (R.H.)
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
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Ding Y, Wang Y, Qu W, Ren X, Lu F, Tian W, Quaisie J, Azam SR, Ma H. Effect of innovative ultrasonic frequency excitation modes on rice protein: Enzymolysis and structure. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112435] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Li Y, Zhang Z, Ren W, Wang Y, Mintah BK, Dabbour M, Hou Y, He R, Cheng Y, Ma H. Inhibition Effect of Ultrasound on the Formation of Lysinoalanine in Rapeseed Protein Isolates during pH Shift Treatment. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:8536-8545. [PMID: 34296617 DOI: 10.1021/acs.jafc.1c02422] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
pH shift is an effective technique for modifying functional properties of food proteins. However, it can increase lysinoalanine (LAL) content under alkali conditions, thus limiting the use of proteins. This study investigated the inhibition effect of ultrasonic parameters on LAL formation in rapeseed protein isolates (RPI) during pH shift treatment (pH-ST). Results showed that the content of LAL decreased by 49.5% and 74.1%, following the use of ultrasound (28 kHz, 40 W/L, 40 °C, and 30 min) under alkali and acidic treatment, respectively. Structural analysis showed that after ultrasonic irradiation, increased sulfhydryl groups and amino acids reduced the dehydroalanine and, thus, decreased LAL content. Particle size, secondary structure, and microstructure (SEM, AFM) analyses showed relative dispersion in protein distribution, reducing intermolecular or intramolecular cross-linking, thereby lowering the LAL content. Thus, ultrasonic-aided pH-ST may be an operational technique toward minimizing LAL formation in RPI.
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Affiliation(s)
- Yihe Li
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
- College of Grain Engineering, Food & Drug, Jiangsu Vocational college of Finance &Economics, 8 Meicheng East Road, Huaian, Jiangsu 223001,China
- Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Zhaoli Zhang
- School of Food Science and Engineering, Yangzhou University, 196 Huayang West Road, Yangzhou, Jiangsu 225127, China
| | - Wenbin Ren
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
- Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Yang Wang
- School of Food Science and Engineering, Yangzhou University, 196 Huayang West Road, Yangzhou, Jiangsu 225127, China
| | - Benjamin Kumah Mintah
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Mokhtar Dabbour
- Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Qaluobia, Egypt
| | - Yizhi Hou
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
- Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
- Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Yu Cheng
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
- Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
- Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
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Ding Y, Ma H, Wang K, Azam SR, Wang Y, Zhou J, Qu W. Ultrasound frequency effect on soybean protein: Acoustic field simulation, extraction rate and structure. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111320] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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